Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
REAL ESTATE ASSETS (Note 2):
Land and improvements	$ 1,127,100	$ 1,076,172
Buildings and improvements	5,056,050	4,908,797
Undeveloped land and construction in progress	2,146,430	1,432,808
Total real estate assets held for investment	8,329,580	7,417,777
Accumulated depreciation and amortization	(1,411,529)	(1,264,162)
Total real estate assets held for investment, net	6,918,051	6,153,615
CASH AND CASH EQUIVALENTS	86,517	57,649
RESTRICTED CASH	0	9,149
MARKETABLE SECURITIES (Note 11)	23,353	20,674
CURRENT RECEIVABLES, NET (Note 3)	17,519	16,926
DEFERRED RENT RECEIVABLES, NET (Note 3)	261,003	246,391
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	183,118	183,728
PREPAID EXPENSES AND OTHER ASSETS, NET (Note 4)	72,675	114,706
TOTAL ASSETS	7,562,236	6,802,838
LIABILITIES:
Secured debt, net (Notes 5 and 11)	336,866	340,800
Unsecured debt, net (Notes 5 and 11)	2,207,049	2,006,263
Unsecured line of credit (Notes 5, 11 and 17)	330,000	0
Accounts payable, accrued expenses and other liabilities	360,674	249,637
Accrued dividends and distributions (Note 17)	47,411	43,448
Deferred revenue and acquisition-related intangible liabilities, net	149,059	145,890
Rents received in advance and tenant security deposits	56,258	56,484
Total liabilities	3,487,317	2,842,522
COMMITMENTS AND CONTINGENCIES (Note 10)
Stockholders’ Equity (Note 6):
Common stock, $.01 par value, 150,000,000 shares authorized, 100,746,988 and 98,620,333 shares issued and outstanding, respectively	1,007	986
Additional paid-in capital	3,965,405	3,822,492
Distributions in excess of earnings	(161,654)	(122,685)
Total stockholders’ equity	3,804,758	3,700,793
Noncontrolling Interests (Notes 1 and 7):
Common units of the Operating Partnership	76,486	77,948
Noncontrolling interests in consolidated property partnerships	193,675	181,575
Total noncontrolling interests	270,161	259,523
Total equity	4,074,919	3,960,316
TOTAL LIABILITIES AND EQUITY (CAPITAL)	$ 7,562,236	$ 6,802,838